Works out of the box. See [[CPU Frequency Scaling]] for more information on power saving. Both cpufrequtils and cpupower work. Latter is recommended for additional features.

Works out of the box. See [[CPU Frequency Scaling]] for more information on power saving. Both cpufrequtils and cpupower work. Latter is recommended for additional features.

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==Video==

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== Video ==

This laptop has two graphics chips, one on the CPU and the other AMD Radeon 6630M with dedicated 1 GB RAM.

This laptop has two graphics chips, one on the CPU and the other AMD Radeon 6630M with dedicated 1 GB RAM.

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{{Note| that the screen goes black after booting because the backlight is disabled by default. Increase back light using shift-fn-f3 key combination. After installing add command <pre>echo 1 > /sys/class/backlight/acpi_video0/brightness</pre> to {{ic|/etc/rc.local}} for turning the back light on automatically.}}

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{{Note| that the screen goes black after booting because the backlight is disabled by default. Increase back light using shift-fn-f3 key combination. After installing add command {{ic|w /sys/class/backlight/acpi_video0/brightness - - - - 1}} to {{ic|/etc/tmpfiles.d/local.conf}} for turning the back light on automatically.}}

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=== Intel ===

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===Intel===

After enabling using vga_swictheroo works perfectly. No Xorg configuration needed.

After enabling using vga_swictheroo works perfectly. No Xorg configuration needed.

Configuration

This article is based on HP Envy 14 2090eo (LS782EA) model. Wireless chip might be different on other regions.

CPU

Works out of the box. See CPU Frequency Scaling for more information on power saving. Both cpufrequtils and cpupower work. Latter is recommended for additional features.

Video

This laptop has two graphics chips, one on the CPU and the other AMD Radeon 6630M with dedicated 1 GB RAM.

Note: that the screen goes black after booting because the backlight is disabled by default. Increase back light using shift-fn-f3 key combination. After installing add command w /sys/class/backlight/acpi_video0/brightness - - - - 1 to /etc/tmpfiles.d/local.conf for turning the back light on automatically.

Intel

After enabling using vga_swictheroo works perfectly. No Xorg configuration needed.